2 × 5² × 61 × 71

Prime Factor Structure

Factorization String 2 × 5^2 × 61 × 71

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 24

Divisor Sum (σ) 415,152

Proper Divisor Sum 198,602

Digit Sum / Digital Root 19 (Root: 1)

Adjacent Primes #216523 ← → #216551

1 2 5 10 25 50 61 71 122 142 305 355 610 710 1,525 1,775 3,050 3,550 4,331 8,662 21,655 43,310 108,275 216,550

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

216,550 108,275 324,826 162,413 487,240 243,620 121,810 60,905 182,716 91,358 45,679 137,038 68,519 205,558 102,779 308,338 154,169 462,508 231,254 115,627 346,882 173,441 520,324 260,162 130,081 390,244 195,122 97,561 292,684 146,342 73,171 219,514 109,757 329,272 164,636 82,318 41,159 123,478 61,739 185,218 92,609 277,828 138,914 69,457 208,372 104,186 52,093 156,280 78,140 39,070 19,535 58,606 29,303 87,910 43,955 131,866 65,933 197,800 98,900 49,450

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